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Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.API 7K Type PS Pneumatic Slip for Oilfield Wellhead
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DEZHOU BTADRILLTOOLS INDUSTRIAL CO., LTDAPI 7K Type MP Safety Slip for Oilfield Wellhead
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Nantong Percent Precision Manufacturing Co., LtdAPI 7-1 Nmdc 4145h Non-Magnetic Drill Pipe Drill Collar for Directional Drilling Tools
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Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.API 7-1 Drilling String Petroleum Spiral Oil Well Drill Well Non Magnetic Drill Collar
Dongying Tianrui Petroleum Technology Co., Ltd.API 5CT Pup Joint 2-7/8 Nu EU K55 J55 L80 N80 for Oil Pipe
Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.API Hwdp Down Hole Drilling Spiral Drill Pipe Drilling Tool Oilfield Drift Casing Drill Collar
Dongying Tianrui Petroleum Technology Co., Ltd.Crack Detection Nmdc Non-Magnetic Spiral Drill Collar Drill Collar
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Nantong Percent Precision Manufacturing Co., LtdAPI Drill Well Certified Casing Drill Collar Well Non Magnetic Suspension Spiral Drill
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Shandong Rosenwell Petroleum Technology Co., Ltd.3 1/2'' Drill Pipe for Well Drilling
Jiyuan City East Heavy Industry Co., Ltd.